netmap bridge can tranmit big packet in line rate ?

[Barney Cordoba]

--- On Tue, 5/21/13, liujie <liujie at 263.net> wrote:

> From: liujie <liujie at 263.net>
> Subject: Re: netmap bridge can tranmit big packet in line rate ?
> To: freebsd-net at freebsd.org
> Date: Tuesday, May 21, 2013, 5:25 AM
> Hi, Prof.Luigi RIZZO
>    
>  Firstly i should thank you for netmap. I tried to send a
> e-mail to you
> yestoday, but it was rejected.
> 
>  I used two machines to test netmap bridge. all with i7-2600
> cpu and intel
> 82599 dual-interfaces card.
> 
>  One worked as sender and receiver with pkt-gen, the other
> worked as bridge
> with bridge.c.
> 
>  as you said,I feeled comfous too when i saw the big packet
> performance
> dropped, i tried to change the memory parameters of
> netmap(netmap_mem1.c
> netmap_mem2.c),but it seemed that  can not resove the
> problem.
>   60-byte packet send 14882289 pps  recv 
> 13994753 pps
>   124-byte     
>    send   8445770 pps 
> recv    7628942 pps
>   252-byte     
>    send   4529819 pps 
> recv     3757843 pps
>   508-byte     
>    send    2350815 pps 
> recv    1645647 pps
>   1514-byte       send 
>   814288 pps     recv  489133
> pps

These numbers indicate you're tx'ing 7.2Gb/s with 60 byte packets and
9.8Gb/s with 1514, so maybe you just need a new calculator?

BC